refactor(automations): streamline model eligibility handling in automation creation

- Removed the eligibility gate for model selection in the automation creation process, allowing users to choose models directly in the builder.
- Updated the `AutomationBuilderForm` to incorporate model selection logic, ensuring that selected models are validated and preserved during automation creation and editing.
- Simplified the `AutomationsContent` and `AutomationNewContent` components by eliminating unnecessary eligibility checks and alerts.
- Enhanced the user experience by integrating model selection directly into the automation approval process, ensuring that only billable models are used.
- Refactored related tests to cover new model selection behavior and ensure proper validation of user-selected models.

surfsense_backend/app/agents/multi_agent_chat/main_agent/tools/automation/create.py

@@ -32,8 +32,7 @@ from app.agents.multi_agent_chat.subagents.shared.hitl.approvals.self_gated impo
 )
 from app.automations.schemas.api import AutomationCreate
 from app.automations.services.automation import AutomationService
-from app.automations.services.model_policy import get_automation_model_eligibility
-from app.db import SearchSpace, User, async_session_maker
+from app.db import User, async_session_maker
 from app.utils.content_utils import extract_text_content
 
 from .prompt import build_draft_prompt
@@ -99,26 +98,11 @@ def create_create_automation_tool(
             declined. Acknowledge once and stop — do NOT retry or pitch
             variants without a fresh user request.
         """
-        # --- 0. Eligibility gate (fail fast, before drafting + HITL) ---
-        # Automations may only use premium or BYOK models. Check up front so we
-        # don't make the user draft + approve a card that can't be saved.
-        async with async_session_maker() as session:
-            search_space = await session.get(SearchSpace, search_space_id)
-            if search_space is None:
-                return {
-                    "status": "error",
-                    "message": "search space not found in this session",
-                }
-            eligibility = get_automation_model_eligibility(search_space)
-        if not eligibility["allowed"]:
-            reasons = " ".join(v["reason"] for v in eligibility["violations"])
-            return {
-                "status": "error",
-                "message": (
-                    f"{reasons} Update the search space's model settings to a "
-                    "premium or your own (BYOK) model, then try again."
-                ),
-            }
+        # Models are chosen per-automation on the approval card (premium/BYOK
+        # selectors) and validated when persisted by ``AutomationService.create``
+        # — so there's no fail-fast search-space eligibility gate here. The
+        # search space's current chat/role model selection no longer constrains
+        # whether an automation can be drafted or saved.
 
         # --- 1. Draft via sub-LLM ---
         prompt = build_draft_prompt(search_space_id=search_space_id, intent=intent)